Recent content by PrplGld

RE: 2005 GMC Sierra 4dr ext cab 4x4 4.8L Been having persistent knock sensor codes and black smoke on an occasional start-up (Also realized I’ve been having to add oil too frequently). Everything I found concering 2-3 seconds of smoke on startup suggested a leaking valve stem seal. So I got...

Yep. It was leave then, or wait till morning with 2-6 more inches of water, and maybe unable to see the stakes... Good to be here, will be doing some work soon so I'll need some input

...not L.A. I'm driving & maintaining a 2005 GMC Sierra 4x4 W/T (4.8L) with ~253k miles. I bought it with 164k miles in 2018. This is a video I shot from the driver's seat. We were rushing from the hunting camp after the Mississippi river was forecast to rise a few more inches overnight. Water...

I've got that also. Not every start, but on most I'll get 2-3 seconds of black smoke. I had been told it was a leaking valve stem seal. Been making plans to replace them soon. Doesn't burn oil any othe time, engine runs well otherwise. It's an '05 GMC Sierra 4.8L with ~253k miles. Is there...